Given: The cost of a table as
[tex]\begin{gathered} Cost=717 \\ Discount=12\% \\ Sales-tax=7\% \end{gathered}[/tex]To Determine: The cost of the tablet
Solution
Let us first determine the discount
[tex]\begin{gathered} Discount=12\%\times717 \\ =0.12\times717 \\ =86.04 \end{gathered}[/tex]Then calculate the discounted price
[tex]Discount-price=717-86.04=630.96[/tex]We would also calculate the sales tax
[tex]\begin{gathered} sales-tax=7\%\times discount-price \\ =0.07\times630.96 \\ =37.86 \end{gathered}[/tex]The total price of the tablet would be
[tex]\begin{gathered} Total-cost=discount-price+sales-tax \\ =630.96+37.86 \\ =668.82 \end{gathered}[/tex]Hence, the cost of the tablet is $668.82